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Papers by Christian Stappert
Ronald E. Goldstein's Esthetics in Dentistry
Purpose: The aim of this paper was to report preliminary results from a cohort of subjects treate... more Purpose: The aim of this paper was to report preliminary results from a cohort of subjects treated with the RevitaliZe Patient Solutions approach. Clinical and radiographic results of axial and tilted implants up to fourteen months of loading are presented. Material and Methods: From September 2011 to May 2012, 7 patients were recruited and treated with a metal reinforced fixed full-arch prosthesis screw-retained over two axial and two tiled implants within 24 hours from the surgery. Final restorations were placed 6 months later. Follow-up visits were scheduled every 6 months and radiographic evaluation of peri-implant bone level changes was conducted. Results: Seven patients (5 females and 2 males) were followed up for an average of 11,88 months (range 8-16 months). Five subjects received implant treatment in both arches, resulting in 12 restorations. A total of 48 fixtures (Zimmer Screw-Vent TSVT) were placed and no failure was reported during the follow-up period, leading to 100%...
Revista Internacional De Odontologia Restauradora Y Periodoncia, Sep 1, 2010
Dental clinics of North America, 2015
Proportional smile design is a useful tool for evaluating and designing smiles that are in harmon... more Proportional smile design is a useful tool for evaluating and designing smiles that are in harmony with the face. Although not always observed in nature, the recurring esthetic dental proportion is preferred by dentists surveyed to the width proportions observed in nature with normal-length teeth. The width/length ratio of the central incisor is a key determinant in providing a smile that is pleasing to dentists. Using the desired tooth length while maintaining the preferred 78% width/length ratio of the central incisor in conjunction with the recommended recurring esthetic dental proportion is a good method for designing a smile balanced with the face.
Schweizer Monatsschrift für Zahnmedizin = Revue mensuelle suisse d'odonto-stomatologie = Rivista mensile svizzera di odontologia e stomatologia / SSO, 2007
This in-vitro study investigated the marginal accuracy of press-ceramic full veneers with differe... more This in-vitro study investigated the marginal accuracy of press-ceramic full veneers with different preparation designs. Measurements of the marginal gap were performed after adhesive cementation as well as after mouth motion fatigue of the veneers. 64 extracted human maxillary central incisors were divided into four groups of 16 specimens each and prepared as follows: Group SZ = enamel (S) restricted 0.5 mm deep preparation with a high palatal shoulder (contact point on tooth structure [Z]), Group SK = enamel (S) restricted 0.5 mm deep preparation with a low palatal shoulder (contact point on ceramic [K]), Group DZ = dentine (D) included 1 mm deep preparation with a high palatal shoulder (contact point on tooth structure), Group DK = dentine included 1 mm deep preparation with a low palatal shoulder (contact point on ceramic). IPS e.max Press ceramic was used to fabricate the full veneers. Restorations were adhesively luted with a dual-polymerizing resin-cementVariolinkII* (*Ivocla...
Practical procedures & aesthetic dentistry : PPAD, 2007
Journal of Esthetic and Restorative Dentistry, 2009
sybrondental.pl
... was Presented at the 25th Annual Meeting of Academy of Osseointegration in Orlando,FL, 2010 a... more ... was Presented at the 25th Annual Meeting of Academy of Osseointegration in Orlando,FL, 2010 as ... inferiority of grafted bone to the pristine bone has been mentioned by Tonetti et al. ... and in lateral direction with a deproteinized, natural bovine cancellous bone mineral (Bio-Oss). ...
STOMATOLOGY EDU JOURNAL, 2019
The International journal of periodontics & restorative dentistry
The aim of this retrospective case control study was to compare a porcine collagen matrix (Mucogr... more The aim of this retrospective case control study was to compare a porcine collagen matrix (Mucograft Seal, Geistlich) with a free gingival punch graft with respect to size, invagination, and color of resulting soft tissue scar formation. Following definition of inclusion and exclusion criteria, 22 patients were retrospectively included in this study. The patients were divided into two groups. In group A, the extraction socket was filled with bovine bone mineral (Bio-Oss, Geistlich) and covered with a free gingival punch graft. In group B, the extraction socket was filled with bovine bone mineral (Bio-Oss) and covered with porcine collagen matrix. After final prosthetic reconstruction (18 implant-retained crowns and 4 fixed partial dentures), two independent examiners evaluated the size, invagination, and color of the soft tissue scar using a modified scar-evaluation scale originally developed for dermal wounds (lower values correspond to less scarring). Patient satisfaction was reco...
The Journal of Adhesive Dentistry, Mar 1, 2008
Revista Internacional De Protesis Estomatologica, Jul 1, 2010
The International Journal of Oral Maxillofacial Implants, May 1, 2012
The International journal of periodontics & restorative dentistry
Objectives: All zirconium-oxide abutment systems are widely used to restore dental implants with ... more Objectives: All zirconium-oxide abutment systems are widely used to restore dental implants with internal vertical connections. Mechanical reliability and fatigue behavior is unknown for different zirconium-oxide abutment-implant configurations and was therefore investigated under fatigue loading. Methods: Eighteen specimens were used for each test group. Each specimen comprised of a CAD/CAM fabricated all zirconium-oxide abutment, screw retained onto a titanium dental implant with an internal connection. Abutments were restored with crowns indicated for a maxillary central incisor. Implants were embedded in epoxy-resin (Epofix, Struers) for mechanical testing. A single load-to-failure test was performed to estimate initial fracture resistance (n≥2). Mouth motion (1.5-2Hz) step-stress accelerated fatigue testing (ELF-3300, Bose) was employed with three stress-time-varying profiles. Ultimate failure was defined by abutment or screw fracture. Specimens were inspected (polarized-specul...
Journal of Biomedical Materials Research Part B Applied Biomaterials
Fatigue damage modes and reliability of hand-veneered (HV) and over-pressed (OP) aluminum-oxide l... more Fatigue damage modes and reliability of hand-veneered (HV) and over-pressed (OP) aluminum-oxide layer structures were compared. Influence of luting cement thickness on mechanical performance was investigated. Sixty-four aluminum-oxide plates (10 × 10 × 0.5 mm) were veneered with hand built-up or pressed porcelain (0.7 mm) and adhesively luted (50- or 150-μm cement thickness) to water-aged composite resin blocks (12 × 12 × 4 mm). Single-load-to-failure and fatigue tests were performed with a spherical tungsten carbide indenter (d = 6.25 mm) applied in the center of the veneer layer. Specimens were inspected with polarized-reflected-light and scanning electron microscopy. Use-level probability Weibull curves were plotted with two-sided 90% confidence bounds, and reliability at 75,000 cycles and 250 N load was calculated. For all specimens but two OP with 50-μm cement thickness, failure was characterized by flexural radial cracks initiating at the bottom surface of the alumina core and...
Sonick/Implant Site Development, 2015
Ronald E. Goldstein's Esthetics in Dentistry
Purpose: The aim of this paper was to report preliminary results from a cohort of subjects treate... more Purpose: The aim of this paper was to report preliminary results from a cohort of subjects treated with the RevitaliZe Patient Solutions approach. Clinical and radiographic results of axial and tilted implants up to fourteen months of loading are presented. Material and Methods: From September 2011 to May 2012, 7 patients were recruited and treated with a metal reinforced fixed full-arch prosthesis screw-retained over two axial and two tiled implants within 24 hours from the surgery. Final restorations were placed 6 months later. Follow-up visits were scheduled every 6 months and radiographic evaluation of peri-implant bone level changes was conducted. Results: Seven patients (5 females and 2 males) were followed up for an average of 11,88 months (range 8-16 months). Five subjects received implant treatment in both arches, resulting in 12 restorations. A total of 48 fixtures (Zimmer Screw-Vent TSVT) were placed and no failure was reported during the follow-up period, leading to 100%...
Revista Internacional De Odontologia Restauradora Y Periodoncia, Sep 1, 2010
Dental clinics of North America, 2015
Proportional smile design is a useful tool for evaluating and designing smiles that are in harmon... more Proportional smile design is a useful tool for evaluating and designing smiles that are in harmony with the face. Although not always observed in nature, the recurring esthetic dental proportion is preferred by dentists surveyed to the width proportions observed in nature with normal-length teeth. The width/length ratio of the central incisor is a key determinant in providing a smile that is pleasing to dentists. Using the desired tooth length while maintaining the preferred 78% width/length ratio of the central incisor in conjunction with the recommended recurring esthetic dental proportion is a good method for designing a smile balanced with the face.
Schweizer Monatsschrift für Zahnmedizin = Revue mensuelle suisse d'odonto-stomatologie = Rivista mensile svizzera di odontologia e stomatologia / SSO, 2007
This in-vitro study investigated the marginal accuracy of press-ceramic full veneers with differe... more This in-vitro study investigated the marginal accuracy of press-ceramic full veneers with different preparation designs. Measurements of the marginal gap were performed after adhesive cementation as well as after mouth motion fatigue of the veneers. 64 extracted human maxillary central incisors were divided into four groups of 16 specimens each and prepared as follows: Group SZ = enamel (S) restricted 0.5 mm deep preparation with a high palatal shoulder (contact point on tooth structure [Z]), Group SK = enamel (S) restricted 0.5 mm deep preparation with a low palatal shoulder (contact point on ceramic [K]), Group DZ = dentine (D) included 1 mm deep preparation with a high palatal shoulder (contact point on tooth structure), Group DK = dentine included 1 mm deep preparation with a low palatal shoulder (contact point on ceramic). IPS e.max Press ceramic was used to fabricate the full veneers. Restorations were adhesively luted with a dual-polymerizing resin-cementVariolinkII* (*Ivocla...
Practical procedures & aesthetic dentistry : PPAD, 2007
Journal of Esthetic and Restorative Dentistry, 2009
sybrondental.pl
... was Presented at the 25th Annual Meeting of Academy of Osseointegration in Orlando,FL, 2010 a... more ... was Presented at the 25th Annual Meeting of Academy of Osseointegration in Orlando,FL, 2010 as ... inferiority of grafted bone to the pristine bone has been mentioned by Tonetti et al. ... and in lateral direction with a deproteinized, natural bovine cancellous bone mineral (Bio-Oss). ...
STOMATOLOGY EDU JOURNAL, 2019
The International journal of periodontics & restorative dentistry
The aim of this retrospective case control study was to compare a porcine collagen matrix (Mucogr... more The aim of this retrospective case control study was to compare a porcine collagen matrix (Mucograft Seal, Geistlich) with a free gingival punch graft with respect to size, invagination, and color of resulting soft tissue scar formation. Following definition of inclusion and exclusion criteria, 22 patients were retrospectively included in this study. The patients were divided into two groups. In group A, the extraction socket was filled with bovine bone mineral (Bio-Oss, Geistlich) and covered with a free gingival punch graft. In group B, the extraction socket was filled with bovine bone mineral (Bio-Oss) and covered with porcine collagen matrix. After final prosthetic reconstruction (18 implant-retained crowns and 4 fixed partial dentures), two independent examiners evaluated the size, invagination, and color of the soft tissue scar using a modified scar-evaluation scale originally developed for dermal wounds (lower values correspond to less scarring). Patient satisfaction was reco...
The Journal of Adhesive Dentistry, Mar 1, 2008
Revista Internacional De Protesis Estomatologica, Jul 1, 2010
The International Journal of Oral Maxillofacial Implants, May 1, 2012
The International journal of periodontics & restorative dentistry
Objectives: All zirconium-oxide abutment systems are widely used to restore dental implants with ... more Objectives: All zirconium-oxide abutment systems are widely used to restore dental implants with internal vertical connections. Mechanical reliability and fatigue behavior is unknown for different zirconium-oxide abutment-implant configurations and was therefore investigated under fatigue loading. Methods: Eighteen specimens were used for each test group. Each specimen comprised of a CAD/CAM fabricated all zirconium-oxide abutment, screw retained onto a titanium dental implant with an internal connection. Abutments were restored with crowns indicated for a maxillary central incisor. Implants were embedded in epoxy-resin (Epofix, Struers) for mechanical testing. A single load-to-failure test was performed to estimate initial fracture resistance (n≥2). Mouth motion (1.5-2Hz) step-stress accelerated fatigue testing (ELF-3300, Bose) was employed with three stress-time-varying profiles. Ultimate failure was defined by abutment or screw fracture. Specimens were inspected (polarized-specul...
Journal of Biomedical Materials Research Part B Applied Biomaterials
Fatigue damage modes and reliability of hand-veneered (HV) and over-pressed (OP) aluminum-oxide l... more Fatigue damage modes and reliability of hand-veneered (HV) and over-pressed (OP) aluminum-oxide layer structures were compared. Influence of luting cement thickness on mechanical performance was investigated. Sixty-four aluminum-oxide plates (10 × 10 × 0.5 mm) were veneered with hand built-up or pressed porcelain (0.7 mm) and adhesively luted (50- or 150-μm cement thickness) to water-aged composite resin blocks (12 × 12 × 4 mm). Single-load-to-failure and fatigue tests were performed with a spherical tungsten carbide indenter (d = 6.25 mm) applied in the center of the veneer layer. Specimens were inspected with polarized-reflected-light and scanning electron microscopy. Use-level probability Weibull curves were plotted with two-sided 90% confidence bounds, and reliability at 75,000 cycles and 250 N load was calculated. For all specimens but two OP with 50-μm cement thickness, failure was characterized by flexural radial cracks initiating at the bottom surface of the alumina core and...
Sonick/Implant Site Development, 2015